SEMAINE D'ÉTUDE SUR LE ROLE DE L'ANALYSE ECONOMETRIQUE ETC. 729 
where 
o£ 
oc denotes the rate of increase of the overall value of holdings 
of durable consumption goods Cc . 
It thus follows that 
116-3) Ro=R’c+ (i - po) Ce 
The adjustment (¢ - gc) Cc is rather small in practice. 
he United States in 1065, it is possible to derive (?) 
or 
Hence 
Nith 
Pc) 
ve 
Le 
R 
=0.0053 . 
() These formulae should be used in all cases to estimate amortization 
rather than direct recourse to the corresponding statistics in yearbooks which 
we quite questionable. 
1?) See § 333-6 below. 
Allais - pag. 33